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Hardy Coral

#ad0a24
Notes

Hardy Coral (#AD0A24) is a true red with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (350°, 89%, 36%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#ad0a24
RGB
rgb(173, 10, 36)
HSL
hsl(350, 89%, 36%)
HWB
hwb(350 4% 32%)
OKLCH
oklch(47.5% 0.187 22.9)
HSV
hsv(350, 94%, 68%)
LAB
lab(36.43% 59.35 33.39)
LCH
lch(36.43% 68.10 29.36)
CMYK
cmyk(0%, 94%, 79%, 32%)

Etymology

Hardy
adjective

Old French hardi, bold / brave — past-participle of hardir (to make brave). As a color modifier, hardy implies a saturated-and-cold-resistant quality, the deep-rich color of Scandinavian-and-Russian boreal-forest-and-tundra outdoor-clothing. Sits at the bold-and-resilient end of the grid, parallel to tough and resilient.

Coral
noun

Mediterranean Corallium rubrum — the red coral of antiquity, harvested from rocky reefs off Sardinia and North Africa for amulets, beads, and the lacquered ornaments that signaled wealth in Etruscan, Roman, and Tibetan culture alike. The color sits between rose and orange, warmer than salmon, softer than vermillion. A reef color and a flesh color at once.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#ad0a24
Original
#474023
Protanopia
#6d611d
Deuteranopia
#bf0019
Tritanopia
#2f2f2f
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
7.38:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.85:1

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